Coded Character Sets: History and DevelopmentThe standards process. Terms and concepts. Early codes. The duals of BCDIC. The size of BCDIC. The size and structure of PTTC. The structure of EBCDIC. The sequence of EBCDIC. The duals of EBCDIC. The graphic subsets of EBCDIC. The card code of EBCDIC. The new PTTC. The size and structure of ASCII. The sequence of ASCII. Which bit first?. Decimal ASCII. Which Hollerith?. Katakana and the Hollerith card code. What is a CPU code?. ASCII in 8-bit interchange environment. The alphabetic extender problem. Graphic subsets for the government. Which ASCII? Logical or, logical not. A comparison of contiguous, noncontiguous, and interleaved alphabets. Code extension examples. The 96-column card code. Glossary. Index. |
Common terms and phrases
029 Keypunch 11 Hole 48-character 64-character 7-Bit Code 8-bit representation alphabetic extenders Binary Representation bit code bit patterns bit sequence Block Hole Patterns Boolean Bottom and Left capital letters card column card hole patterns CCITT chain printer Chapter code positions code table coded character set collating sequence contiguous control characters criteria Criterion data processing data transmission Decimal ASCII decision digit punches Duocase EBCDIC ENQ NAK example FIELDATA FORTRAN graphic characters H-duals high-order bits Hollerith Card Code Katakana Keypunch Latin alphabetics Left 2 Bottom Logical lower-case alphabetics lower-case shift magnetic tape Pattern Hole Pattern PL/I possible problem proposed PTTC PTTC/EBCD punched card punched card code Quadrant shown in Fig signed numerics SOH DC1 Space character specials standards committee subset System/3 to/from Top and Left translation relationship typewriter Version yes yes yes zone punches
